R-symmetry and Supersymmetry Breaking at Finite Temperature

Details R-symmetry and Supersymmetry Breaking at Finite Temperature R-symmetry and Supersymmetry Breaking at Finite Temperature

2009-08-19

arxiv.org/abs/0908.2770v2

JHEP 0910:007,2009

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, 4 figures - Minor revisions, references added. To appear in JHEP

Scientific paper

10.1088/1126-6708/2009/10/007

We analyze the spontaneous $U(1)_R$ symmetry breaking at finite temperature for the simple O'Raifeartaigh-type model introduced in [1] in connection with spontaneous supersymmetry breaking. We calculate the finite temperature effective potential (free energy) to one loop order and study the thermal evolution of the model. We find that the R-symmetry breaking occurs through a second order phase transition. Its associated meta-stable supersymmetry breaking vacuum is thermodynamically favored at high temperatures and the model remains trapped in this state by a potential barrier, as the temperature lowers all the way until T=0.

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